no_magic_numbers false positive for enum cases with a negative value

[stephengurnett]

New Issue Checklist

• [*] Updated SwiftLint to the latest version
• [*] I searched for existing GitHub issues

Describe the bug

Negative numbers (except for -1) will trigger the no_magic_numbers - e.g. case negative = -2. Equivalent positive numbers (e.g. 2) are fine.

Complete output when running SwiftLint, including the stack trace and command used

swiftlint lint Example.swift --enable-all-rules
Linting Swift files at paths Example.swift
Linting 'Example.swift' (1/1)
The `anyobject_protocol` rule is now deprecated and will be completely removed in a future release.
./Example.swift:3:22: warning: No Magic Numbers Violation: Magic numbers should be replaced by named constants. (no_magic_numbers)
Done linting! Found 1 violation, 0 serious in 1 file.

Environment

• SwiftLint version (run swiftlint version to be sure)? 0.50.3

• Installation method used (Homebrew, CocoaPods, building from source, etc)? Portable

• Paste your configuration file: None

• Are you using nested configurations? No

• Which Xcode version are you using (check xcodebuild -version)? 14.2

• Do you have a sample that shows the issue?echo "internal enum Example {\n case positive = 2\n case negative = -2\n}" | swiftlint lint --no-cache --use-stdin --enable-all-rules

enum Example: Int {
    case positive = 2
    case negative = -2
}